Their inhibiting actions on the superoxide anions were examined by using nitroblue tetrazolium(NBT) method.
用NBT法研究了配合物对超氧阴离子自由基的抑制作用；
It was suggested that those biological effects were caused by superoxide anions and hydroxyl radicals produced in irradiated cells.
推测电离辐射的上述生物学效应正是由辐照细胞生成的超氧阴离子和羟自由基引起的。
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